US1782738A

US1782738A - Valve bag

Info

Publication number: US1782738A
Application number: US133336A
Authority: US
Inventors: Chester C Martin
Original assignee: ST Regis Paper Co
Current assignee: ST Regis Paper Co
Priority date: 1926-09-03
Filing date: 1926-09-03
Publication date: 1930-11-25
Anticipated expiration: 1947-11-25

Description

C. C. MARTIN Nov. 25, 1930,

VALVE BAG Filed Sept. 5 ,1926

Patented Nov. 25, 1930 UNITED STATES PATIENT: OFFICE CHESTER C. MARTIN, OF LUCKEY, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO ST.

7 REGIS PAPER COMIPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK VALVE BAG Application filed September 3, 1926. Serial No. 133,336.

This invention relates to valve bags, and more particularly to paper valve bags intended for comparatively light materials.-

The purpose of the invention is to provide a bag which may be filled'through a valve in a well known manner, and securely closed so that there will be no leakage through the valve.

In the accompanying drawings forming a.

closed having the usual valve flap 11, between which and the end flaps the feed pipe 12 enters the bag, the 'bag being filled through the opening 13 at the end of the feed pipe. This is in accordance with the well-known construction and operation of such bags.

In, accordance with my invention there is a tube 14, preferably of fairly stiff paper, inserted into the valve opening. This tube is ailixed to the inner end of valve flap 11, as by means-of adhesive15. The opposite side of the tube is aflixed to the end flap, as by means of adhesive 16. In the construction shown, adhesive 16 does not extend all the way between the end ilap and the tube, leaving a free space, as at 17, between the tube 14 and 'the end flap 18. i

The outer end 19 of tube 14 extends sufficiently far so that it can be folded after the bag isfilled, as shown in Figs. 3 and 4. Preferably, the tube is first flattened, then the corners 20 are folded in the manner shown in Fig. 3, and then the end of the tube is folded over and tucked under end flap 18, as shown in Fig. 4. If preferred, the

' folded end of tube 14 might be folded under against valve flap 11, but it is considered preferable to insert it beneath the end flap in the manner shown.

This manner of closing the valve may be used in any valve bag where the slight amount of leakage which normally occurs through a secure closing of comparatively small paper valve'bags in which light material, such as lime, is packaged. The lighter material does not close a papervalve as securely as heavy material. Where these small bags are to be handled in such a way that any leakage is objectionable, as where they are handled through grocery stores, etc., it is desirable to securely seal the valve. This is accomplished, particularly where the tube 14 is sufliciently stiff so that it retains its folded position with certainty It will be understood that, while one form of bag and valve-sealing tube has been disclosed in detail, various modifications may be made within the scope of the appended claims.

What I claim is:

1. A bag ready for filling and having a valve opening, a valve-sealing tube open at both ends and having its inner end affixed in the valve opening and having its outer end extending outward from said opening and of the valve and having its outer end extending far enough to fold, there being a space between the tube and the outer edge of the vall)ve adapted to receive the folded end of the tu e.

3. A paper valve bag having its valve formed by end flaps, and a paper valve-sealing tube open at both ends and inserted between the valve forming flaps and adhered to said flaps at its inner end, the outer end of the tube extending outward far enough to fold, and there being a space between the outer edge of the end flap and the tube wherein the folded end of the tube may be inserted.

In testimony whereof I have hereunto signed my name to this specification.

CHESTER C. MARTIN.